3.7 sec in total
492 ms
3 sec
243 ms
Visit czso.cz now to see the best up-to-date Czso content for Czech Republic and also check out these interesting facts you probably never knew about czso.cz
ČSÚ je ústředním orgánem státní správy ČR. Podle zákona o státní statistické službě získává a vytváří statistické informace o sociálním, ekonomickém, demografickém a ekologickém vývoji ČR a tyto údaje...
Visit czso.czWe analyzed Czso.cz page load time and found that the first response time was 492 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
czso.cz performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value5.9 s
14/100
25%
Value5.2 s
61/100
10%
Value310 ms
78/100
30%
Value0.058
98/100
15%
Value7.1 s
52/100
10%
492 ms
95 ms
191 ms
658 ms
285 ms
Our browser made a total of 74 requests to load all elements on the main page. We found that 97% of them (72 requests) were addressed to the original Czso.cz, 3% (2 requests) were made to Mone.statistika.cz. The less responsive or slowest element that took the longest time to load (861 ms) belongs to the original domain Czso.cz.
Page size can be reduced by 388.3 kB (30%)
1.3 MB
923.9 kB
In fact, the total size of Czso.cz main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 904.5 kB which makes up the majority of the site volume.
Potential reduce by 73.9 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 73.9 kB or 81% of the original size.
Potential reduce by 308.6 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Czso needs image optimization as it can save up to 308.6 kB or 34% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 1.3 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.
Potential reduce by 4.5 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Czso.cz has all CSS files already compressed.
Number of requests can be reduced by 52 (71%)
73
21
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Czso. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.
www.czso.cz
492 ms
jquery-ui.min.css
95 ms
jquery.js
191 ms
jquery-ui.min.js
658 ms
jquery.cookie.js
285 ms
jquery.jui_dropdown.min.js
286 ms
monitoring.utils.js
285 ms
main.css
473 ms
application.css
286 ms
carousel.css
377 ms
jquery-datetime-picker.css
378 ms
recentnews.css
379 ms
main.css
380 ms
contextmenu.css
472 ms
barebone.jsp
780 ms
application.js
473 ms
aui-carousel.js
472 ms
jquery-datetime-picker.js
566 ms
main.css
566 ms
csu-base.css
566 ms
csu-navmenu.css
567 ms
csu-forms.css
697 ms
csu-ie-fix.css
698 ms
csu-products.css
699 ms
csu-ui.css
699 ms
csu-temp.css
748 ms
csu-media.css
753 ms
csu-nahledovy-panel.css
754 ms
csu-tajny-panel.css
755 ms
csu-prilohy.css
756 ms
csu-cookie-bar.css
842 ms
main.js
861 ms
matomo.js
785 ms
csu_2012_bg-page.gif
95 ms
csu_2012_logo.png
96 ms
en_GB.png
96 ms
csu_2012_bg-search.png
96 ms
input_shadow.png
97 ms
search.png
97 ms
csu_2012_bg-menu.gif
189 ms
csu_2012_menu-home1.gif
190 ms
aboutblank.gif
189 ms
cesko_20_let_v_eu.jpg
189 ms
samy_04_2024.jpg
282 ms
cr_eu_vlajky.jpg
393 ms
590x260_2024_cesko+v+cislech.png
469 ms
domacnost_ucty01.jpg
282 ms
transparent.gif
285 ms
banner_sldb_cz_190x100_02.jpg
304 ms
banner_vdb_2020_cz.jpg
376 ms
banner_statisticky_geoportal.png
376 ms
banner_silc2020.jpg
378 ms
RSS.png
398 ms
c93d4ed0-1f4c-44b3-b456-d34b658e3ac0
470 ms
youtube_icon2.png
471 ms
Instagram_picto.png
472 ms
linkedin.png
486 ms
logo_esfcr.jpg
491 ms
logo_opzp.jpg
562 ms
548 ms
597 ms
csu_2012_indicator.gif
99 ms
csu_2012_map.png
283 ms
aktuality_separator.gif
102 ms
csu_2012_feed.gif
105 ms
csu_2012_arrow-blue.gif
99 ms
csu_2012_bg-page-bottom-big.png
100 ms
csu_2012_arrow-blue.gif
190 ms
csu_2012_bg-page-bottom.png
189 ms
matomo.php
169 ms
pause.png
95 ms
prev.png
95 ms
next.png
180 ms
print.css
95 ms
czso.cz accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-hidden="true"] elements contain focusable descendents
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
czso.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
czso.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Czso.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Czso.cz main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
czso.cz
Open Graph description is not detected on the main page of Czso. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: